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Keywords:

  • hydrogen storage;
  • microporous materials;
  • nanostructures;
  • solvent storage;
  • supramolecular chemistry
Thumbnail image of graphical abstract

Play ball! A family of discrete metallo-supramolecular nanoballs (see picture) containing different divalent metals is produced by self-assembly. These species have porous structures, similar to metal–organic frameworks. Stepwise desolvation results in bare metal sites which can be functionalized with organic molecules; the interball cavities show high affinity for hydrogen gas.